怎么让激光飞？ [英] How to make lasers fly?

问题描述

我正在使用c＃来获取 winapp 。不适用于Unity或其他。

我的类 
 {
 Lasers laser1 =  new  Lasers（）; 
 Lasers laser2 =  new  Lasers（）; 
 
 
  public  Screen（）
 {
 InitializeComponent（）; 
 DoubleBuffered =  true ; 
  this  .Paint + =  new  PaintEventHandler（Screen_Paint）; 
 
计时器timerforLaser =  new  Timer（）; 
 timerforLaser.Tick + =  new  EventHandler（Timer_forLaser_Tick）; 
 timerforLaser.Interval =  100 ; 
 timerforLaser.Start（）; 
 
 .... 
 
 laser1.Initialize（）; 
 laser2.Initialize（）; 
} 
 
  void  Screen_Paint（ object  sender，PaintEventArgs e） 
 {
 ........ 
 
 e.Graphics.DrawImage（laser1.Img0，laser1.Rectangle）;  //   LaserPaint  
 e.Graphics.DrawImage（laser2.Img0，laser2.Rectangle）;  //   LaserPaint  
} 
  void  Timer_forLaser_Tick（ object  sender，EventArgs e）
 {
 laser1.ShootUp（）; 
 laser2.ShootUp（）; 
  this  .Refresh（）;  //  非常重要 - 没有他这里没有任何作用 
} 
 
  private   void  Screen_KeyDown（ object  sender， KeyEventArgs e）
 {
  if （e.KeyCode == Keys.Space）
 {
 laser1.New（ Player.X，Player.Y）; 
 laser2.New（Player.X，Player.Y）; 
} 
  this  .Refresh（）;  //  非常重要 - 没有他这里没有任何作用 
} 
} 

从我发布的代码中，当我按空格键时，它将在屏幕上创建2个激光图像并在计时器事件中更新它们。

问题在于它是一次创建它们，还是重叠的。

我希望他们一个接一个地创建。像一阵爆发。彼此之间的时间很短。并没有重叠。

我想我必须以某种方式在每个激光的起始点之间放一个计时器，只要我按住Space键。或者某种延迟。如果我必须创建100个激光器，我可能会创建一个包含所有激光器的阵列？我不知道如何让这件事发挥作用。



非常感谢。



我尝试过：

一切

一切

一切

一切

一切

一切

解决方案

您的代码完全按照您的要求进行操作...同时绘制两者。如果你想单独绘制每一个，那么你需要一个变量来跟踪为该定时器周期绘制的激光然后交替...等等...

 私人  bool  isAlternate; 

  void  Screen_Paint（ object  sender，PaintEventArgs e）
 {
  //   ........  
 
  if （isAlternate）
 e.Graphics.DrawImage（laser1.Img0，laser1.Rectangle）;  //   LaserPaint  
  else  
 e.Graphics.DrawImage（laser2.Img0，laser2） .Rectangle）;  //   LaserPaint  
} 
 
  void  Timer_forL aser_Tick（ object  sender，EventArgs e）
 {
 laser1.ShootUp（）; 
 laser2.ShootUp（）; 
  this  .Refresh（）;  //  非常重要 - 没有他这里没有任何作用 
 isAlternate =！isAlternate; 
} 

I am using c# for winapp. Not for Unity or whatever.

my class
{
        Lasers laser1 = new Lasers();
        Lasers laser2 = new Lasers(); 


        public Screen()
        {
            InitializeComponent();
            DoubleBuffered = true;
            this.Paint += new PaintEventHandler(Screen_Paint);

            Timer timerforLaser = new Timer();
            timerforLaser.Tick += new EventHandler(Timer_forLaser_Tick);
            timerforLaser.Interval = 100;
            timerforLaser.Start();

            ....
  
            laser1.Initialize();
            laser2.Initialize();
        }
 
        void Screen_Paint(object sender, PaintEventArgs e)
        {
            ........

            e.Graphics.DrawImage(laser1.Img0, laser1.Rectangle);//LaserPaint
            e.Graphics.DrawImage(laser2.Img0, laser2.Rectangle);//LaserPaint
        }
        void Timer_forLaser_Tick(object sender, EventArgs e)
        {
            laser1.ShootUp();
            laser2.ShootUp();
            this.Refresh(); //very Important -without him here nothing works
        }

        private void Screen_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Space)
            {
                laser1.New(Player.X, Player.Y);
                laser2.New(Player.X, Player.Y);
            }
            this.Refresh(); //very Important -without him here nothing works
        }
}

From the code i post, when I press Space key, it will create 2 lasers images on the screen and update them in the timer event.
The problem is that is creating them at once, and overlapped.
I want them created 1 after another. Like a burst. With a short time between each other. And no overlaps.
I imagine i must put a timer between the starting point of each laser somehow, as long as i keep pressed the Space key. Or a delay of some sort. And if i have to create 100 lasers, i will probably create an array that will contain all the lasers? I have no idea how to make this thing work.

Thank you kindly.

What I have tried:

everything

everything

everything

everything

everything

everything

解决方案

Your code is doing exactly what you asked it to do ... draw both at the same time. If you want to draw each one individually, then you need a variable to track which laser is drawn for that timer cycle and then alternate... Something like...

private bool isAlternate;

void Screen_Paint(object sender, PaintEventArgs e)
{
    // ........
 
    if(isAlternate)
        e.Graphics.DrawImage(laser1.Img0, laser1.Rectangle);//LaserPaint
    else
        e.Graphics.DrawImage(laser2.Img0, laser2.Rectangle);//LaserPaint
}

void Timer_forLaser_Tick(object sender, EventArgs e)
{
    laser1.ShootUp();
    laser2.ShootUp();
    this.Refresh(); //very Important -without him here nothing works
    isAlternate = !isAlternate;
}

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